Kobold DRS Series User manual
Operating Instruction
for
Turbine-wheel Flow Meter
Model: DRS
DRS
Page 2 DRS K06/0418
1.Contents
1.Contents........................................................................................................2
2.Note ..............................................................................................................3
3.Instrument Inspection....................................................................................3
4.Regulation Use..............................................................................................3
5.Operating Principle........................................................................................4
6.Mechanical Connection.................................................................................4
7.Electrical Connection ....................................................................................5
8.Commissioning..............................................................................................9
9.Maintenance .................................................................................................9
10.Technical information ..................................................................................10
11.Order Codes ...............................................................................................12
12.Dimensions .................................................................................................13
13.EU Declaration of Conformance..................................................................15
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: [email protected]
Internet: www.kobold.com
DRS
DRS K06/0418 Page 3
2.Note
Please read and take note of these operating instructions before unpacking and
putting the unit in operation and follow the instructions precisely as described
herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and with the prevailing regulation applying to
procedural safety and the prevention of accidents.
When used in machines, the measuring unit should be used only then when the
machines fulfil the EC-machine guide lines.
PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Table 8, Pipe, Group 1 dangerous fluids
3.Instrument Inspection
These devices are checked before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel
service/forwarding agent immediately, since they are responsible for damages
during transit.
Scope of delivery:
Turbine-Wheel Flow Meter: Model DRS
Operating Instructions
4. Regulation Use
The DRS is to be installed only in the specified applications. Any use of the DRS
sensor which exceeds the manufacturer’s specifications may invalidate the
warranty and any resulting damage is not the responsibility of the manufacturer.
The user assumes all risk for such usage. The application specifications include
the installation, start-up and service requirements specified by the manufacturer.
DRS
Page 4 DRS K06/0418
5.Operating Principle
The DRS flow meter operates on the turbine wheel principle. The liquid first flows
through a laminar flow element that eliminates turbulence and routes the flow
stream into the turbine wheel. The turbine wheel then starts to rotate. This rotary
motion is sensed non-contacting by magnets embedded in the turbine wheel and
converted to a frequency signal. The frequency is proportional to the flow velocity.
Various outputs, such as a frequency divider, analogue output or compact
electronics with LED display with limit contacts are available as options. An
integrated temperature sensor for simultaneous measuring of flow rate and
temperature is also available as an additional option. The rotating vane is
sapphire-supported: this ensures a high degree of linearity and long service life.
6.Mechanical Connection
6.1.Operational conditions check-up:
Flow volume
max. operational pressure
max. operational temperature
Attention! Exceeding prescribed ranges may cause damage to ball-
bearings and considerable measurement errors may result.
6.2.Mounting
Direction of flow must match the direction of arrow (position independent).
Pressure- and tensile loading is to be avoided on the connection threads.
Inlet and outlet piping should be secured at least 50 mm away mechanically from
the connections.
Check the sealing of the connections
The use of flat sealings is to be preferred. The sealing surfaces are shown in
section 11 - “Dimensions“
DRS
DRS K06/0418 Page 5
7.Electrical Connection
7.1.General
Attention! Ensure that the power ratings of your supply system are
in agreement with the power ratings of the flow meter.
Please ensure that the electric supply lines are not active.
Wire the connection cable/plug with the supply line according to the following
connection diagram.
We recommend a cross-sectional area of 0.25 mm² for the supply line.
Attention! A false level on plug connections may cause destruction
of unit’s electronics.
7.2.Evaluation electronics
Frequency output without Pt100
Plug connection(..F3000; ..F3200; ..F3400; ..F3900)
1
2
34
+Vs
Signal
Out
n.c.
GND
Plug connection (..F5000; ..F5200; ..F5400; ..F5900; ..K0000)
brown: + VS
blue: GND
Black: Signal
...S000 ...S00P
white: + Vs brown: + Vs
green: Signal black: Signal
brown: GND green-yellow: GND/PT100-1
yellow: PT100-2
DRS
Page 6 DRS K06/0418
7.3.Evaluation electronics:
Frequency output and analogue output with Pt100 (DRS-..P)
Plug connection (..F300P;
..F320P, ..F340P, ..F390P,
..L303P; ..L343P)
Cable connection (..F500P;
..F520P, ..F540P, F590P)
brown: +Vs
blue: GND / Pt100
black: Signal
white: PT100 2-wire
grey: PT100 2-wire
7.4.Evaluation electronics: analogue output (..L..)
3-conductor (..L303, ..L343)
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
DRS
DRS K06/0418 Page 7
2-conductor (..L342)
1
2
34
S+
S-
n.c.
n.c.
+Vs
GND
2-conductor, DIN-plug
(DRS-...L442)
+Vs
GND
1
2
3
S+
S-
PE n.c.
7.5.Compact electronics:
(..C30R, ..C30M, ..C34P, ..C34N)
Please see
Operating Instruction Manual for compact electronics with frequency output
DRS
page 8 DRS K05/1116
7.6.Evaluation electronics: Pointer display (..Z300, ..Z340)
1
2
34
+Vs
Signal
Out
n.c.
GND
+Vs
GND
Caution! In case current output is not needed, PIN 4 (Signal OUT) is
to be permanently connected wit Ground (GND) (short circuit jumper).
DRS
DRS K06/0418 Page 9
8.Commissioning
8.1.Frequency output
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.2.Analogue output
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.3.Pointer display (..Z300, ..Z340)
The measuring units are pre-adjusted and ready for operation after electrical
connection.
8.4.Compact electronics
Please see
Operating Instruction Manual for compact electronics with frequency output
9.Maintenance
As long as the medium to be measured is not polluted, the measuring unit is
maintenance-free. In order to avoid problems, we recommend installation of a
filter, such as magnet filter, Model MFR.
Should cleaning be deemed necessary, the sensor must be uninstalled and
rinsed thoroughly in clean water.
Work on electronics may only be carried out by the supplier, so that the product
guaranty remains valid.
DRS
page 10 DRS K05/1116
10.Technical information
10.1. Sensor data
Measuring range: 2-40 L/min water
Sensor pulse output: 384 Hz at 40 L/min Metal Sensor
(DRS-...150; DRS-...250)
352 Hz at 40 L/min plastic sensor (DRS-...350)
Max. operating pressure: 200 bar (DRS-...150; DRS-...250)
16 bar (DRS- ...350)
Temperature: -20 to +80 °C (medium, standard), -20...+150 °C
(medium, -S00x), -20 to +100 °C (storage)
Measuring accuracy: ±1.5% of f.s.
±5 % of f.s. (DRS-0)
Linearity: ±0.5 % of f.s.
Repeatability: ±0.1 % of f.s.
Electrical connection: plug connector M12x1 1.5 m cable (DRS-0 only)
2 m cable (DRS-...F5 only)
Protection: IP 65 (plug connector), IP 66 (cable)
Weight (sensor and electronics)
Sensor: approx. 80 g (DRS-...350)
approx. 550 g (DRS-...150; DRS-...250)
Electronics: approx. 60 g (DRS-...K..; DRS-...F..; DRS-...L3...)
approx. 100 g (DRS-...L442)
approx. 450 g (DRS-...Z...)
approx. 650 g (DRS-...C...)
10.2. Evaluation electronics
DRS-0...K000 / DRS-0...S00x
Supply: 5...28 VDC
Output pulse: rectangular pulse signal, open collector, NPN,
max. 10 mA
DRS-...F300, DRS-...F500
Supply: 12…28 VDC
Power consumption: 10 mA
Pulse output: PNP, open collector, max. 20 mA
Option: Pt 100, 2-wire
Response time (Pt100): t90 = 100 s
This manual suits for next models
3
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